COM1_HUMAN antibody CtBP interacting protein antibody CtBP-interacting protein antibody CtIP antibody DNA endonuclease RBBP8; RBBBP8; RBBP-8; RBBP8; Retinoblastoma-binding protein 8; Retinoblastoma-interacting protein and myosin-like; RIM; SAE2; Sporulation in the absence of SPO11 protein 2 homolog.